Well. Deadpool is basically an unkillable goofball. He has a very powerful healing factor caused by cancer or something like that and the pain drives him to do very stupid things that would get any normal person killed. Like in this picture.

You are quite a bit off on that one. His healing factor is a product of experimentation in the weapon x program. He is crazy because he is simply crazy, plus the fluctuating brain cells being healed add to it a lil.

Actually he is wrong. He said his healing factor was a result of his cancer and that extreme pain drives him to do crazy ****. Both are wrong. Yes it is a copy of wolverines healing factor created by the weapon x program and it keeps his cancer at bay. His craziness is due to him just being crazy and his constantly fluctuating brain cells.

the cancer spread because of the healing factor. its the reason he looks the way he does and when they healed his cancer his healing factor was lost as a side effect.
and i was referring to the anon as being right